Abstract: Vibration fixture apparatus and method of use for high volume testing of circuit boards and the like is provided comprising a frame peripherially surrounding the board and a shimming structure which is hydraulically actuated to bind against the board and frame selectively for faithful transmission of vibration energy from a vibration source through the frame to the board to be tested.

Abstract: An improved arrangement for the brake system of a hydrostatic loader comprises a drive motor having an output shaft extending outwardly from both ends of the motor, drive means operatively connecting the output shaft to the axle of the loader at one end of the output shaft, the opposite end of the output shaft carrying a valve port block thereon, the valve port block mounted rigidly adjacent one end of the motor. A disc brake mechanism is then mounted on the output shaft adjacent the valve port block to complete the improved brake system arrangement.